H_∞控制在飞行/推进综合控制系统中的应用

H_∞ Control Applied in Integrated Flight and Propulsion Control Systems

研究了多变量控制技术应用于飞行/推进一体化控制器的设计问题。对于耦合的飞行子系统和推进子系统,建立了飞行/推进综合模型,分析了对模型输出端乘性不确定性和对跟踪误差性能不确定性的飞行/推进综合多变量反馈控制系统转化为混合灵敏度函数整形问题设计的途径,提出了一种按时间加权的误差平方积分(ITAE)准则选择加权灵敏度函数的方法,应用混合加权灵敏度H∞控制器的设计方法对飞行/推进一体化模型进行了设计,并对所求的最优控制器进行了控制系统性能仿真验证。

This paper deals with the application of advanced multivariable control technologies to integrated flight and propulsion control systems. Focusing on the coupled flight and propulsion subsystems, the integrated flight and propulsion model was established. The approach which translates the multivariable feedback control problem of integrated flight and propulsion system with multiplicative output perturbation and tracking error performance uncertainty into mixed weighted sensitivity function shaping problem was analyzed. The methodology of selecting weighted sensitivity function based on the integral of time multiplied by absolute error rule is presented and the H∞ control is applied to the design of the integrated flight and propulsion control system model. The optimum control system is verified by simulation.